Energy saving, retrofit and optimizing introduction

■ 目录 Catalogue

Introduction

Strategy

3

4

1

2

目前国内风机运行效率低下的现状及原因分析

Current situation of low efficiency in fan operation and analysis

“重通”风机在节能改造上的实例

Examples in energy saving and reconstruction by CQGI fan

“重通”拥有原创研发、创新及系统分析能力 Original research, innovation and systematic analysis of CQGI

风机系统高效节能改造首选“重通”

CQGI leading high efficiency, energy saving&retrofit of fan system

“重通”高效离心通风机向世界先进水平迈进

CQGI high efficient centrifugal fan approaching advanced tech level 5

■ 重通集团简介Brief Introduction of CQGI

重庆通用工业（集团）有限责任公司为大型国有企业，主要研究生产大型工业透平机械，主要产品有工业通风机、鼓风

机、压缩机、离心制冷机和风力发电叶片。重通公司设计生产的离心通风机致力于钢铁行业、水泥行业近三十年，见证了

宝钢风机国产化的进程和新型干法水泥的发展。宝钢风机第一台国产化从重通开始，第一条2000吨/日、5000吨/日新型干

法水泥的窑尾高温风机都是由重通公司提供。“重通”离心通风机在钢铁、水泥行业起到风机行业的带头军作用。

Chongqing General Industry (Group) CO., LTD is a large state-owned enterprise, mainly specializing in large industrial

turbine machinery. The main products are industrial fan, blower, compressor, centrifugal chiller and wind vane. Centrifugal

fan is designed and manufactured by CQGI used in the iron and steel industry, cement industry nearly thirty years,

witnessing the BAO Steel Fan localization process and the development of new dry process cement. BAO Steel fan first

localization began from CQGI, the first NSP cement preheater high temperature fan with production ability 2000 tons/day,

5000 tons/day is provided by CQGI company. “CQGI" centrifugal fan in the steel, cement industry plays a leading role in

industry of fan.

由于前些年国家对于基础建设投资较大，房地产火爆，钢铁、水泥行情好，各钢铁、水泥生产厂家超产欲望

强烈，致使设计参数与运行参数偏差较大，再加上设计配风时又留有15%-20%的富余量。这就造成风机设计

工况点在80%以上的高效点，而实际运行的工况点与设计工况点偏移，致使实际在低效率点上运行，有的低

到了40%的效率点上运行。

Due to large investment in infrastructure, real estate, steel and cement industry recent year, the iron and

steel, cement manufacturers desire strongly and cause that the design parameters and operation

parameters deviation is bigger, and the worse that the air distribution with 15% - 20% of the amount of

surplus when design. This makes the fan design point is in more than 80% efficient point, and the actual

running condition and design conditions of deviation causes the actual running at low efficiency point, even

to 40% efficiency point.



风机结合现场管道的匹配情况不是最优，缺乏风机与系统合理衔接的研究。

风机设计效率不高，没有达到世界最先进水平。

风机产品恶性竞争，价格低廉不能生产高端产品。

Combination between fan and piping doesn’t match perfect, lack of researching linking to fan and the system.

Design efficiency is not high, not reached the world's most advanced level. Vicious competition, fan at low

price can't produce high-end products.



双吸风机叶轮单面磨损的管道两向流分析

“重通”拥有原创研发、创新及系统分析能力

Original research, innovation and systematic analysis of CQGI

Pipe two side flow analysis of single side abrasion of double suction fan impeller



蓖冷机一室风管分析



Duct analysis of grate cooler



钢厂助燃通风系统管阻分析



Pipe resistance analysis of steel plants’ combustion and ventilation system



水泥磨循环风机SL4-73№21F



案例1、陕西冀东海德宝扶风公司更换转子提高效率的案例分析介绍

Case 1, Project analysis and introduction of replacing the rotor efficiency of Heidelberg Shaanxi Jidong Fufeng

company

原来 original 改造后要求

after optimization design

设计工况 design

condition

运行工况1 operating condition1


设计工况 design condition


当地大气压 Local atmospheric pressure Pa

99564 99564 91000 91517

进口温度 inlet temperature (℃)

70 106 108 106 102

进口密度 inlet density

标态 standard state(kg/ m3)

0 3.11 1.53 2 1.524

进口风量 inlet flow

实际 actual(m3/s)

61.1 25.2 42.51 64 49.98

进口压力 inlet pressure

静压 static pressure（Pa）

-3800 -2842 -2936 -4000 -3122

压升 pressure-rise


3250 2303 2646 3700 3172

出口压力 out let pressure


-550 -539 -290 -300 -150

粉尘含量 dust loading g／m3 200

粉尘性质 dust characteristics Cement powder

Cement mill circulating fans SL4-73№21F

水泥磨循环风机SL4-73№21F

案例1、陕西冀东海德宝扶风公司更换转子提高效率的案例分析介绍

Case 1, Project analysis and introduction of replacing the rotor efficiency of Heidelberg Shaanxi Jidong Fufeng company



该风机原运行电流44A~46A左右，按拉法基标准测试风机运行效率38%~43%，我们采用最节省时间和成本的方式，对叶轮进行改造设计，更换转子组的方案。更换后按拉法基标准测试风机风机运行效率75%，运行电流26A~28A。该风机配套电机400KW 6KV，节约有功功率约120kw/h。

The original operating current of the fan is 44A ~ 46A or so, according to Lafarge Standard test fan operation

efficiency of 38% to 43%, we apply the most time and cost-saving way to transform the design of the impeller.

After replacing, The Fan operating efficiency is 75% according to the standard tests by Lafarge Fan, and the

operating current is 26A ~ 28A. The fans match with motor 400KW 6KV, save active power about 120kw / h.

一年价值计算为：120×24×300×0.7=60.5万元/USD96,031.00.

Calculated as the value of one year:120×24×300×0.7=60.5万元/USD96,031.00.

Cement mill circulating fans SL4-73№21F

项目 item 单位 unit 数值

介质 medium / 烧结烟气

Sintering Gas

进口介质密度

inlet density kg/m3 0.848

进口容积流量

inlet flow m3/min 10000

进口压力

inlet pressure kPa(A) 82

进口温度

inlet temperature ℃ 150

出口压力

outlet pressure kPa(A) 98.5

静压升static

pressure rise kPa 16.5

主轴转速

speed of mainshaft r/min 1500



案例2、由我公司总工（博士）开发的烧结SJ9000风机CFD优化风机叶轮改造

Case 2, sintering SJ9000 fan impeller fan CFD optimization transformation developed by our Chief Engineer (Dr.)

rotating direction Circumferentially

spaced 22 vanes

改造前

before optimized design

SJ9000风机转子组实物



案例2、某钢铁有限公司烧结SJ9000风机CFD优化风机叶轮改造

Case 2, Fan Impeller CFD optimization of a sintering SJ9000 Steel Co., Ltd. Fan

Rotor assembly of SJ9000

SJ9000风机叶轮改造后效率曲线

SJ9000 fan impeller efficiency curve after optimizing

transform

在SJ9000烧结鼓风机（主抽）设计点与运行点几乎没有偏差，原电机3500KW、6KV，不换电机实施改

造后，为了能够更直观的反映节能效果，把转子安装在烧结系统与未进行改造前相同机组的生产线进行对比测试，

风机本身的效率提高18%，节约有功功率630kw/h，一年节约约315万元。

钢厂的所有大型风机、水泥生产线上五大风机的改造，如果采用CFD优化风机叶轮，再结合偏工况点的现状，

一起改造效果将会更加明显。

Sintering blower (spindle) in SJ9000, the design point and the operating point is almost no deviation,

the original motor 3500KW, 6KV, after no change in motor implementation of the transformation, in

order to reflect the energy-saving effect more directly , the rotor is mounted before sintering system and

not to transform the same unit production line comparison test, the efficiency of the fan itself increased

by 18%, saving active power 630kw / h, a year to save about 315 million.

All transformation of large fan and five fan on the cement production line, if the fan impeller is by CFD

optimization, combined with the status quo bias operating point, the effect of reconstruction will be

more obvious.



重庆通用工业（集团）有限责任公司

Chongqing General industry (group) coLtd

拥有老、中、青的技术人才队伍，能将鼓风机、压缩机的先进技术运用到通风机；

technical personnel of different ages apply advanced technology to fan.

拥有西安交大博士带领的掌握CFD流体分析前沿技术的科技人才；

have the technology talents led by Dr of xi 'an jiaotong university ,they masters CFD fluid analyzes cutting-edge

technology .

拥有从事钢铁、水泥生产线风机设计研究的人才梯队；

have personal engaged in steel, cement production line fan design research

拥有ISO9001、国军标认证体系和核电认证体系三结合的质保体系；

combined ISO9001,Military standard certification system and nuclear quality assurance system .






CQGI high efficient centrifugal fan approaching advanced tech level

安徽铜陵上峰高效节能风机厂内组装

Anhui tongling shangfeng” high efficiency and energy-saving fan is assembled in factory



安徽铜陵上峰改造前运行情况 running status before reconstrcution foranhui tongling shangfeng



安徽铜陵上峰改造前尾排风机运行电流

running current of end exhaust fan for anhui tonglign shangfeng before reconstruction



安徽铜陵上峰尾排风机改造后情况

running status of end exhaust for anhui tongling shangfeng after reconstruction

安徽铜陵上峰尾排风机改造后电流

current of end exhaust fan for anhui tonglin shangfen after reconstruction



谢谢！THANKS！

Factory Add.： No.18 Jidian Road, Nan'an District, Chongqing.

Zip Code：401336

Tel： 023-67661176 Fax： 023-67659553

E-mail：[email protected]

International Marketing Department

Ray Xie Project & Sales Manager (Metallurgy, Cement)

Tel：+86 13968260629 Fax：+86 23 88515928

Email：[email protected], [email protected]

mailto:[email protected]





Engineering

Energy saving, retrofit and optimizing introduction